Homodiaetus

Homodiaetus
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Siluriformes
Family:	Trichomycteridae
Subfamily:	Stegophilinae
Genus:	Homodiaetus Eigenmann & Ward, 1907
Type species
Homodiaetus anisitsi Eigenmann & Ward, 1907

Homodiaetus is a genus of pencil catfishes native to South America.

There are currently four recognized species in this genus:

The distribution of Homodiaetus is restricted you southeastern South America, from Uruguay to Paraguay Rivers in the west to the coastal drainages of the Rio de Janeiro State, Brazil. H. anisitsi originates from the Paraná-Paraguay River basin. H. banguela inhabits the São João River and H. passarellii is known from coastal basins in the State of Rio de Janeiro. H. graciosa is distributed in coastal basins of southeastern Brazil in states of Paraná and São Paulo.

Homodiaetus is currently distinguished from other genera of Stegophilinae by the combination of the origin of the pelvic fin midlength between the tip of the snout and the caudal-fin origin, the opercle with three or more odontodes, and the gill membranes confluent with the isthmus.Homodiaetus species are small and grow up to 42 millimetres (1.7 in) SL. They are transparent with the except of the head and abdomen.Homodiaetus species have a thin body and depressed head that is almost as wide as the head is long. The dorsal and ventral profiles are straight except for a head. The mouth is inferior.

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